As of October 9th, 2015 the 5V Trinket comes with a micro-USB connector instead of a mini-USB connector!

Trinket may be small, but do not be fooled by its size! It's a tiny microcontroller board, built around the Atmel ATtiny85, a little chip with a lot of power. Adafruit wanted to design a microcontroller board that was small enough to fit into any project, and low cost enough to use without hesitation. Perfect for when you don't want to give up your expensive dev-board and you aren't willing to take apart the project you worked so hard to design. It's Adafruit's lowest-cost arduino-IDE programmable board!

The Attiny85 is a fun processor because despite being so small, it has 8K of flash, and 5 I/O pins, including analog inputs and PWM 'analog' outputs. Adafruit designed a USB bootloader so you can plug it into any computer and reprogram it over a USB port just like an Arduino. In fact Adafruit even made some simple modifications to the Arduino IDE so that it works like a mini-Arduino board. You can't stack a big shield on it but for many small & simple projects the Trinket will be your go-to platform.

This is the 5V Trinket. There are two versions of the Trinket. One is 3V and one is 5V. Both work the same, but have different operating logic voltages. Use the 3V one to interface with sensors and devices that need 3V logic, or when you want to power it off of a LiPo battery. The 3V version should only run at 8 MHz. Use the 5V one for sensors and components that can use or require 5V logic. The 5V version can run at 8 MHz or at 16MHz by setting the software-set clock frequency.

Even though you can program Trinket using the Arduino IDE, it's not a fully 100% Arduino-compatible. There are some things you trade off for such a small and low cost microcontroller!

Trinket does not have a Serial port connection for debugging so the serial port monitor will not be able to send/receive data

Some computers' USB v3 ports don't recognize the Trinket's bootloader. Simply use a USB v2 port or a USB hub in between

Here are some useful specifications!

ATtiny85 on-board, 8K of flash, 512 byte of SRAM, 512 bytes of EEPROM

Internal oscillator runs at 8MHz, but can be doubled in software for 16MHz

USB bootloader with a nice LED indicator looks just like a USBtinyISP so you can program it with AVRdude (with a simple config modification) and/or the Arduino IDE (with a few simple config modifications)

Micro-USB jack for power and/or USB uploading, you can put it in a box or tape it up and use any USB cable for when you want to reprogram.

Adafruit really worked hard on the bootloader process to make it rugged and foolproof, this board wont up and die on you in the middle of a project!

~5.25K bytes available for use (2.75K taken for the bootloader)

Available in both 3V and 5V flavors

On-board 3.3V or 5.0V power regulator with 150mA output capability and ultra-low dropout. Up to 16V input, reverse-polarity protection, thermal and current-limit protection.

Power with either USB or external output (such as a battery) - it'll automatically switch over

On-board green power LED and red pin #1 LED

Reset button for entering the bootloader or restarting the program. No need to unplug/replug the board every time you want to reset or update!

5 GPIO - 2 shared with the USB interface. The 3 independent IO pins have 1 analog input and 2 PWM output as well. The 2 shared IO pins have 2 more analog inputs and one more PWM output.

This product is listed in:

Documentation and Resources:

The Maker Revolution celebrates the creation of new devices and the modification of existing ones - the transition from a consumer buying goods to eventually having a major part in their creation. The Maker Revolution places strong emphasis on free (...

Hey guys! First time poster. I've been working on a blaster for my girlfriend's costume, and I thought I would share it with everyone. When triggered, it plays a selected sound effect and flashes the light. Pretty simple :)

Product Comments

Your comment/question:

Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

$3 for Small Items (3-7 days, not tracked, only available on selected small items)

$6.95 for Standard Post (2-4 days, tracked)

$8.95 for Express Post (Overnight for Australia Post Next Day Network, tracked)

Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

$11.49 for Pack and Track (3+ days, tracked)

$16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address:

Unit 18, 132 Garden Grove ParadeAdamstownNSW, 2289Australia

Please checkout our customer service page if you have other frequently asked questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.